From e09b48316c22fce727bce3c89fa64fc627787e6a Mon Sep 17 00:00:00 2001 From: Heikki Linnakangas Date: Fri, 27 Mar 2015 23:35:16 +0200 Subject: Add index-only scan support to btree_gist. inet, cidr, and timetz indexes still cannot support index-only scans, because they don't store the original unmodified value in the index, but a derived approximate value. --- contrib/btree_gist/sql/char.sql | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'contrib/btree_gist/sql/char.sql') diff --git a/contrib/btree_gist/sql/char.sql b/contrib/btree_gist/sql/char.sql index 9ae0f1fb3f6..f6eb52e6724 100644 --- a/contrib/btree_gist/sql/char.sql +++ b/contrib/btree_gist/sql/char.sql @@ -29,3 +29,9 @@ SELECT count(*) FROM chartmp WHERE a = '31b0'::char(32); SELECT count(*) FROM chartmp WHERE a >= '31b0'::char(32); SELECT count(*) FROM chartmp WHERE a > '31b0'::char(32); + +-- Test index-only scans +SET enable_bitmapscan=off; +EXPLAIN (COSTS OFF) +SELECT * FROM chartmp WHERE a BETWEEN '31a' AND '31c'; +SELECT * FROM chartmp WHERE a BETWEEN '31a' AND '31c'; -- cgit v1.2.3